Cohort Studymoderate evidence
Aseptic loosening of small hydroxyapatite-coated quadrangular tapered femoral stems: camouflage in the Canadian Joint Replacement Registry.
Hip international : the journal of clinical and experimental research on hip pathology and therapy·September 29, 2026·PMID 42811739
Why it mattersUndersized cementless stems may be a preventable cause of early aseptic loosening, a leading reason for revision. This study quantifies the risk using real-world registry data, helping surgeons recognize when a chosen stem size is disproportionately small relative to the cup and prompting intraoperative reassessment.
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